Simulate mouse click inside QTextEdit in Qt?

[vk41286]

I am trying to simulate a mouse click inside a QTextEdit in Qt as my application does not have any mouse or keyboard. This is an Embedded hardware board.

int main(int argc, char *argv[])
{
 
        QApplication a(argc, argv);
        MainWindow w;
        w.setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
        w.setStyleSheet("background-color: Black;");
        w.startcomthread();
        w.show();
 
 
        QTextEdit *txt = new QTextEdit();
        txt->setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
        txt->setFocus();
        txt->setStyleSheet("background-color: rgb(255, 255, 255,200);");
        txt->setGeometry(10,20,100,30);
        txt->setText("Text 1");
 
       QCursor::setPos((txt->pos()+=QPoint(10,10)));                                                                                                                  
       QMouseEvent * event1 = new QMouseEvent ((QEvent::MouseButtonPress), QPoint(10,10),
        Qt::LeftButton,
        Qt::LeftButton,
        Qt::NoModifier);
 
        qApp->postEvent((QObject*)txt,(QEvent *)event1);
 
        QMouseEvent * event2 = new QMouseEvent ((QEvent::MouseButtonRelease), QPoint(10,10),
        Qt::LeftButton,
        Qt::LeftButton,
        Qt::NoModifier);
 
        qApp->postEvent((QObject*)txt,(QEvent *)event2);
 
 
        txt->show();
 
        return a.exec();
}

int main(int argc, char *argv[])
{

        QApplication a(argc, argv);
        MainWindow w;
        w.setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
        w.setStyleSheet("background-color: Black;");
        w.startcomthread();
        w.show();


        QTextEdit *txt = new QTextEdit();
        txt->setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
        txt->setFocus();
        txt->setStyleSheet("background-color: rgb(255, 255, 255,200);");
        txt->setGeometry(10,20,100,30);
        txt->setText("Text 1");

       QCursor::setPos((txt->pos()+=QPoint(10,10)));                                                                                                                  
       QMouseEvent * event1 = new QMouseEvent ((QEvent::MouseButtonPress), QPoint(10,10),
        Qt::LeftButton,
        Qt::LeftButton,
        Qt::NoModifier);

        qApp->postEvent((QObject*)txt,(QEvent *)event1);

        QMouseEvent * event2 = new QMouseEvent ((QEvent::MouseButtonRelease), QPoint(10,10),
        Qt::LeftButton,
        Qt::LeftButton,
        Qt::NoModifier);

        qApp->postEvent((QObject*)txt,(QEvent *)event2);


        txt->show();

        return a.exec();
}

To copy to clipboard, switch view to plain text mode 

When I run the application, I just see a Cursor on my textedit box.I want the cursor to be clicked / at-least cursor should be blinking inside textedit widget.

Thank you.

[wysota]

I am trying to simulate a mouse click inside a QTextEdit in Qt

Are you sure this is really what you want? Maybe instead you want the widget to gain focus or maybe you want to position the text cursor in a given position? Which is it then?

[vk41286]

IMG_20150610_112142.jpg

Thank you. Please check the image attached.
Actually I want the cursor to blink inside the text edit box. But its not happening. I do not have mouse or keyboard attached.

Just a cursor should blink after Text 1.

Thank you once again !

Even the below code does not work. There is no Cursor at the start or end of QTextEdit box.

Please help me. Thank you

#include <QLabel>
#include <QFont>
#include <QtGui>
#include <QPixmap>
#include <QTextEdit>
#include <QTextCursor>
#include <QLineEdit>
 
int main( int argc, char **argv ) {
QApplication app( argc, argv );
 
QTextEdit *txt = new QTextEdit();
txt->setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
txt->setFocus();
txt->setStyleSheet("background-color: rgba(255, 255, 255, 200);");
txt->setGeometry(10,20,100,30);
 
QTextCursor cursor = QTextCursor(txt->document());
cursor.insertText("Text 1");
cursor.beginEditBlock();
// OR
//In your case, either methods below will work since the text has been inserted already
//cursor.movePosition(QTextCursor::End);
//cursor.movePosition(QTextCursor::Start);
txt->show();
return app.exec();
}

#include <QLabel>
#include <QFont>
#include <QtGui>
#include <QPixmap>
#include <QTextEdit>
#include <QTextCursor>
#include <QLineEdit>

int main( int argc, char **argv ) {
QApplication app( argc, argv );

QTextEdit *txt = new QTextEdit();
txt->setWindowFlags(Qt::Window | Qt::FramelessWindowHint);
txt->setFocus();
txt->setStyleSheet("background-color: rgba(255, 255, 255, 200);");
txt->setGeometry(10,20,100,30);

QTextCursor cursor = QTextCursor(txt->document());
cursor.insertText("Text 1");
cursor.beginEditBlock();
// OR
//In your case, either methods below will work since the text has been inserted already
//cursor.movePosition(QTextCursor::End);
//cursor.movePosition(QTextCursor::Start);
txt->show();
return app.exec();
}

To copy to clipboard, switch view to plain text mode 

[wysota]

Actually I want the cursor to blink inside the text edit box.

You want the cursor to blink or you want the widget to accept key events? The cursor blinks when the widget has focus. Then you can post key events to it either artificially or by properly implementing an input method handler that will use a virtual keyboard.

[vk41286]

All I want is the Cursor to blink in my widget (QTextEdit).

Thank you for helping. Waiting for your code

[wysota]

All I want is the Cursor to blink in my widget (QTextEdit).

Well... In that case subclass the widget, start a timer and draw or not draw the cursor during paintEvent. cursorRect() will tell you where to draw.

[vk41286]

Could you please provide me some sample code. I am completely new to QT. I have 4 days of exp in QT

[wysota]

Could you please provide me some sample code. I am completely new to QT. I have 4 days of exp in QT

There are well over 300 examples bundled with Qt. Many of them tell you how to draw a rectangle. I don't want to give you ready code because in my opinion what you are trying to do is wrong and is not what you are supposed to do so I don't want to encourage you to go the wrong way. If you really want to burn your fingers, you will have to make some effort to do it.